Gestational Age Calculator | Track Your Pregnancy Journey
Gestational Age
A gestational age calculator helps determine pregnancy progress. Specifically, it measures time since your last period. Consequently, doctors track fetal development accurately. Moreover, it schedules important prenatal tests. Additionally, it estimates your due date. Therefore, proper pregnancy care becomes possible.
Gestational age starts on the first day of your last menstrual period (LMP). Essentially, it measures pregnancy duration. Typically, pregnancy lasts about 40 weeks. However, gestational age differs from fetal age. Fetal age begins at conception. Thus, gestational age includes two weeks before conception.
Furthermore, knowing gestational age is crucial. For instance, it guides prenatal testing schedules. Also, it monitors baby growth patterns. Moreover, it identifies potential complications early. Therefore, maternal health improves significantly. Ultimately, pregnancy outcomes become better.
Calculate Your Gestational Age
Your Gestational Age
0 weeks 0 days
Estimated due date:
How to Calculate Gestational Age
Our gestational age calculator stands out from others. First, it uses medical standards. Also, it provides instant results. Moreover, it's completely free. Furthermore, no registration is required. Therefore, accessibility improves for everyone.
To calculate gestational age: Note your last period's first day. Then, count weeks from that date. For example, if your LMP was 10 weeks ago, gestational age is 10 weeks. Additionally, add 280 days to LMP for due date. Consequently, pregnancy milestones become clear.
Meanwhile, remember that actual delivery dates vary. Typically, only 5% of babies arrive exactly on their due date. However, most births occur between 38-42 weeks. Therefore, flexibility remains important. Ultimately, your doctor provides the most accurate timeline.
Detailed Pregnancy Information
Gestational Age Formula
Gestational Age = Current Date - Last Menstrual Period (LMP) Date
Due Date = LMP Date + 280 days (40 weeks)
Our gestational age calculator works simply. First, enter your LMP date. Then, the tool calculates elapsed time. Specifically, it counts weeks and days. Additionally, it projects your due date. Therefore, pregnancy tracking becomes effortless.
Furthermore, the calculator follows medical guidelines. For instance, it uses Naegele's rule. This method adds 280 days to LMP. Consequently, due date estimation becomes standardized. Moreover, it adjusts for different month lengths. Thus, accuracy improves significantly.
Pregnancy Timeline Overview
Gestational Age
Development Milestone
Pregnancy Stage
4 weeks
Positive pregnancy test possible
First trimester
8 weeks
Fetal heartbeat detectable
First trimester
12 weeks
Risk of miscarriage drops significantly
End of first trimester
20 weeks
Anatomy scan, gender often visible
Mid-pregnancy
28 weeks
Baby may survive if born prematurely
Third trimester
37 weeks
Considered full term
Final weeks
40 weeks
Official due date
Full term
Frequently Asked Questions
What is a gestational age calculator?+
A gestational age calculator determines pregnancy duration. It counts from your last menstrual period. This tool estimates fetal development stage. Also, it projects your due date. Therefore, pregnancy tracking becomes easier.
Why is gestational age different from fetal age?+
Gestational age includes two weeks before conception. Fetal age starts at actual conception. Therefore, gestational age is typically two weeks more. This difference follows medical standards. Consequently, pregnancy dating becomes consistent.
How accurate is this calculator?+
Our calculator uses standard medical formulas. It's highly accurate for regular cycles. However, ultrasound provides confirmation. Always consult your healthcare provider. They offer personalized medical advice.
Can I use this calculator if my cycles are irregular?+
Yes, but accuracy decreases. Irregular cycles affect ovulation timing. An early ultrasound provides better dating. Your doctor adjusts dates accordingly. Therefore, professional consultation remains important.
Why is gestational age important?+
Gestational age guides prenatal care. It schedules crucial tests accurately. Also, it monitors fetal growth patterns. Moreover, it identifies potential complications. Therefore, healthy pregnancy outcomes become more likely.